MESON Chess Problem Database

Problem Display
PID: 181156 (8/6K1/8/4pBB1/4N3/6p1/3pp3/3kN1Q1 w - - 0 1)

Taylor, Jesse Paul

San Francisco Chronicle, 1904

8/6K1/8/4pBB1/4N3/6p1/3pp3/3kN1Q1

#2

6 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...dxe1Q
      • 2.Sc3#
    • 1...dxe1S
      • 2.Sc3#
    • 1...dxe1B
      • 2.Sc3#
    • 1...dxe1R
      • 2.Sc3#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qg1#
      • 1...dxe1Q
        • 2.Qc1#
        • 2.Qb3#
      • 1...dxe1S
        • 2.Sc3#
        • 2.Qc1#
        • 2.Qd2#
      • 1...dxe1B
        • 2.Qc1#
        • 2.Qb3#
      • 1...dxe1R
        • 2.Sc3#
        • 2.Qc1#
        • 2.Qd2#
        • 2.Qb3#
        • 2.Qd3#
      • 1...Kc1!
    • 1.Qd4?
      • threat
        • 2.Qa1#
        • 2.Qxd2#
      • 1...Kc1
        • 2.Qa1#
      • 1...Kxe1
        • 2.Qg1#
      • 1...exd4!
    • 1.Qc5?
      • 1...Kxe1
        • 2.Qg1#
      • 1...dxe1Q
        • 2.Qc1#
      • 1...dxe1S
        • 2.Sc3#
        • 2.Qc1#
      • 1...dxe1B
        • 2.Qc1#
      • 1...dxe1R
        • 2.Sc3#
        • 2.Qc1#
      • 1...g2!
    • 1.Qb6?
      • threat
        • 2.Qb1#
      • 1...Kxe1
        • 2.Qg1#
      • 1...Kc1!
    • 1.Qxg3?
      • 1...dxe1Q
        • 2.Qb3#
      • 1...dxe1S
        • 2.Sf2#
        • 2.Sc3#
      • 1...dxe1B
        • 2.Qb3#
      • 1...dxe1R
        • 2.Sf2#
        • 2.Sc3#
        • 2.Qb3#
        • 2.Qd3#
      • 1...Kc1!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qa1#
      • 1...Kc1
        • 2.Qa1#
      • 1...Kxe1
        • 2.Qg1#
      • 1...dxe1Q
        • 2.Qa4#
      • 1...dxe1S
        • 2.Sc3#
      • 1...dxe1B
        • 2.Qa4#
      • 1...dxe1R
        • 2.Sc3#
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(b);P_SPINQ(b),XS(A)::S(C)
    • P(b);P_SPINS(b),XS(A)::S(C)
    • P(b);P_SPINB(b),XS(A)::S(C)
    • P(b);P_SPINR(b),XS(A)::S(C)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(b)
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINP(c),XS(A)::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(B);P_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • K(a);N_SPINP(b),OGATEB,P-FLIGHT,XS(A)::QAR2(B)
      • Refutation
        • P(e);N_SPINP(b),XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(A)::QAR2(B)
        • P(b);N_GUARD,SBLOCK,XS(A)::QAR1(B)
      • Refutation
        • P(d);
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(A)::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(B);XP(d)
      • Vars
        • P(b);SBLOCK,XS(A)::QAB(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::QAR2(B)
      • K(a);OGATEB,P-FLIGHT,XS(A)::QAR2(B)
      • P(b);SBLOCK,XS(A)::QAB(B)
      • P(b);SBLOCK,XS(A)::S(C)
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